Stop-motion for knitting-machines.



PATENTED AUG. 2, 1904.

F. WILGOMB.

STOP MOTION FOR KNITTING MACHINES.

APPLICATION FILED 00130, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

No. 766,305. PATBNTED AUG. 2, 1904.

' F. WILC-OMB.

STOP MOTION FOR KNITTING MACHINES.

APPLICATION FILED OUT. 30, 1903.

N0 MODEL. 2 SHEBTS-SHBET 2.

FRANK VV/LCOMB alum/4% b No. 766,305. Patented August 2, 1904.

UNITED STATES PATENT OFFICEL FRANK IVILCOh IB, OF NORRISTOWVN, PENNSYLVANIA, ASSIGNOR TO H. C. COLEMAN, OF NORRISTOIVN, PENNSYLVANIA.

STOP-MOTION FOR KNITTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 766,305, dated August 2, 1904.

Application filed October 30, 1903. Serial No. 179,258. (No model.)

To it y 001M367! the belt on the loose pulley The shifting- 50 Be it known that I, FRANK IVILooMn, a citiblock is guided in its movement by a rod or zen of the United States, residing at Norrisbar 11, extending out from the side of the town,Penns vlvania,haveinvented certain new frame and engaging a groove 12 in the top of 5 and useful Improvements in Stop-Motions for the block.

Knitting-Machines, of which the following is For operating the let-off fork against the 5 5 a specification. pressure of the spring a rock-shaft 13 is pro A Myinvention relates to stop-motion and letvided in said machine, journaled in bearings off mechanism for knitting-machines; and it let on the machine-frame and having a handconsists in the features and combination and lever 15 for operating it. The shaft at its arrangement of parts hereinafter described, rear endhas an arm 16 projecting inwardly and particularly pointed out in the claims. when the parts are in the position shown in In the accompanying drawings, Figure 1 is all the drawings and having pivotally cona plan view of so much of a knitting-machine nected thereto a link 17, the other end of which 5 as is necessary for a clear understanding of is pivoted to the belt-shipper block 7. The

my invention, parts being in section. Fig. 2 arrangement of parts is such that when the is a side view with parts broken away and rock-shaft is turned to move the arm 16 into parts being in section. Fig. 3 is a detail view the position indicated in Fig. 3 said position in section with parts in elevation and parts will be maintained by the parts because the 20 omitted, said view being taken from a point pivot-point of 16 will be level with or slightly at the right of Fig. 2. Fig. 4: is a view of a below the center of the rock-shaft, and the detail. tendency of the spring exerted through link In carrying outmy inventionIhave applied 17 will be to hold the parts locked in this pomy patented form of stop-motion disclosed in sition.

2 5 Letters Patent of the United States No. Allthe parts thus far described are the same 698,090, granted to me on April 22, 1902, to as those well known on the type of machine a machine known as the Acme or Mayo, referred to, and I will now describe how my such application requiring special devices and stop-motion and a brake are applied to such a novel combination and arrangement of the machines and associated with the let-off mech- 30 same in order that the stop-motion mentioned anism just described.

may be associated with the let-01f mechanism The stop-motion proper as shown herein is So of said Mayo machine and whereby certain substantially the same as that above referred advantages accrue which will be hereinafter to. Briefly, it comprises a stop-motion head described. 18, supported on a standard 19, said stop-mo- 35 Iwill first describe the let-off mechanism of tion head containing mechanism controlled the said known machine with which my inby either a feeler-linger 20 or a sweep 21, so 8 5 vention is associated. that when either of these devices is operated In the drawings, 1 represents a knittingthe mechanism within the stop-motion head head of the known form. The movable parts will cause a vertical rock-shaft 22 to be oper- 4 of the knitting-head are driven through gearated, the lower end of said rock-shaft being ingQfromamain shaft 3, suitably journaled journaled in the bracket 23 and carrying a 0 as, for instance, in a bracket 4. This drivingtrigger 24, which will release a lever 25, pivshaft carries fast and loose pulleys 5 5. A oted to said bracket and arranged to be under belt-shifting fork 6 is carried by a block 7, tension of the spring 26.

45 slidably mounted on a rod 8, extending out I will now describe the devices and the comfrom the frame 9 of the machine. A spring bination and arrangement of the same which lO-is arranged between the belt-shifting block I have invented and through which the patand the frame to keep the block with the fork ented form of stop-motion and the known pressed toward the left, Fig. l, and thus keep form of let ofi' mechanism are associated.

The lever is connected by a link 27 to a carrier 28 in the form of a plate arranged to slide at its upper end on the rock-shaft 13 and guided at its lower end by a fixed rod 29, held at its front end in a bracket 30, secured to the front of the frame, and at its rear end said guide-rod is supported in an ear 30 of a bracket 31, fixed to the frame in any suitable manner, as by the bolt or nut 32. This carrier-plate has thereon a let-off pin 33, consisting in the present instance of a conical form of pin so arranged that when the carrier-plate is moved toward the rear of the machine when the stop-motion proper operates and pulls on the link 27 the let-off pin will strike a stud or screw 28 on a collar 29 fixed on the rockshaft by the said screw, and the rockshaft will be turned through a sufiicient arc to carry the point 16 above the horizontal plane of the center of the rock-shaft, and immediately the spring 10 exerts its force, and thus shifts the belt from the fast pulley to the loose one. The parts in all the drawings are shown in the position assumed by them when the machine is in operation. 0

The function of the let-off pin is simply to throw the arm 16 up slightly from the position shown in Fig. 3, so that the pull of the link 17 will throw the arm 16 up to the point 16, thus causing the let-ofi? action to beperformed.

I provide a brake to stop the revolution of the machine quickly upon the operation of the stop-motion and let-ofi. This brake comprises a fork 34, adapted to engage a part on the drive-shaft 3, the said fork having its stem 37 guided in ears 36 of the bracket before described. Said stern has an arm 37 fixed thereto, and a spring 38 surrounds the shank or stem and constantly exerts its force, tending to press the brake shoe or fork against the shaft. The arm 37 X has a sliding connection also with a second guide-rod 39, held in ears 40 of the saidbracket 31. To the arm 37 of the brake-stern is pivoted at 41 a link 42, which at its forward end is provided with a roller 43, bearing on a cam 44 on a rock-shaft 45, which rock-shaft is journaled in the bracket 30 and has a hand-lever 46 fixed thereon. The cam 44 has part of its periphery 44 concentric with the center of the shaft 45 and another part 44 flattened. The hand-lever 46 is also provided with an arm 47, which is connected with the carrier 28 by a link 48. When the knitting-machine is running normally, the parts will be in the position shown in the several views, the brake being off and being held off by the roller 43, bearing against the high part or concentric portion 44 of the cam. As soon as the stopmotion operates and the link 27 is pulled the carrier-plate 28 will be operated, first putting in motion the let-ofi' mechanism and then through link 48 and shaft 45 causing the cam to present its low or flat portion to the roller 43, thus allowing the spring 38 toexert its force, moving the arm 37 x and forcing the brake shoe or fork against the brake-surface of the shaft. By operating the hand-lever both the brake-shoe and the carrier 28 are reset into normal position, ready for automatic operation.

The parts when operated as just described having rendered the machine inoperative, it will be impossible to start the machine again unless the stop-motion is again reset. This is due to the fact that the let-off pin will prevent the belt-shifter from being set to start the machine so long as the stop-motion remains unset. In other Words, the let-ofi' pin remains to obstruct the movement of the screw or pin 28 until the carriage 28 is moved forward in setting the stop-motion. The brake also remains in action against the brake-surface of the shaft until the stop-motion is reset, for, as before described, the brake is controlled from the carrier 28 and until it is moved forward upon the resetting of the stop-motion proper the brake remains efi ective.

I have devised my stop-motion with a view to fitting it to the machine without altering the arrangement of parts existing in said machine. The let off carrier is applied to the existing shaft 13, as is also the collar 29 and the new parts immediately associated with the carrier lie close to the side frame of the machine and on the outside thereof,while the brake with its guiding and operating means lie close against the inner side of the side frame and operative connection between the devices lying outside and those lying inside the frame is made through the rock-shaft before mentioned extending across the front edge of the side frame.

The let-off device consists of the belt-shifting fork, though where in the claims I employ these terms I do so in a generic sense, meaning the device shownor any substantial equivalent thereof, and Where I employ the term brake device I mean the brake-shoe or any substantial equivalent thereof.

I claim as my invention IIO 1. In combination with a let-ofi device, a reand the let-off device, and stop-motion means connected with the said carrier, substantially as described.

3. In combination with a let-off device, a re ciprocatory device, a rock-shaft on which the said device. reciprocates, means for operating,

said rock-shaft from the reciprocatory device, connections from the said rock-shaft to the let-off device and stop-motion mechanism connected with the reciprocatory device, substantially as described.

4. In combination with a let-off device, a rock-shaft,connections therefrom to the let-off device, a reciprocatory device arranged to rotate the rock-shaft and stop-motion connections leading to the reciprocatory device, substantially as described.

5. In combination with a let-off device, a rock-shaft with connections to the let-ofi' device, a carrier slidable on the said rock-shaft, a pin on the carrier and a projection on the rock-shaft to be operated by the pin for turn: ing the rock-shaft, substantially as described.

6. In combination a let-off device, a rockshaft with connections to the let-off device, a carrier slidable on the said rock-shaft, a pin on the carrier and a projection on the rockshaft to be operated by the pin for turning the rock-shaft, said projection being adjustable, substantially as described.

7. In combination with a let-off device, a rock-shaft with connections therefrom to the let-off device, a carrier sliding on the rockshaft at one end, .a guide for the other end of the said carrier upon which it slides, a pin on the carrier, a projection on the rock-shaft and stop-motion means connected with the carrier, substantially as described. I

8. In combination with a let-ofi' device arranged outside of the frame of the machine, a brake device arranged on the inside of the frame, a reciproeatory carrier, connections to operate the let-off device from the carrier, said carrier being arranged on the outer side of a brake device, a connection between the said carrier and brake device comprising a rockshaft, a cam thereon, a link connected with the brake device and controlled by the said cam and a connection from the carrier to the rockshaft, substantially as described.

10. In combination with a let-off device, a reciprocatory carrier, connections therefrom to the said device for operating the same, a brake device, a rock-shaft connected with the carrier, means connecting the said rock-shaft with the brake device and stop-motion mech anism connected with the carrier, substantially as described.

11. In combination with a let-ofi device, a reciprocatory carrier, connections therefrom to the said device for operating the same, a brake device, a rock-shaft connected to said brake device'and to said carrier and a handlever for operating the rock-shaft, substantially as described.

12. In combination with a brake device, a

reciprocatory carrier, a rock-shaft connected 13. In combination with a let-ofi' device, a

bracket to be secured to the frame, a brake device carried by the said bracket, a carrier, connections for operating the same, said carrier being guided by a part of the bracket and connections between the said carrier. and the brake device and between the carrier and the let-ofi' device, substantially as described.

14. In combination a let-off device, a rockshaft having a connection thereto, a carrier slidable on said shaft, said rock-shaft and carrier being arranged on the outside of the frame, a brake device arranged inside the frame, a rock-shaft at the front of the frame, connections between said rock-shaft and the carrier and brake device respectively, and stop-motion mechanism, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK VVILGOMB.

Witnesses:

HENRY IJFox, MABEL L. EVANS.- 

